Adding Pull To Refresh to ListView for iOS :)

I love pull to refresh and I wanted to add it to iOS. Mark's video is awesome showing you how to use custom renderers, so I applied his practices to iOS:

http://motzcod.es/post/87917979362/pull-to-refresh-for-xamarin-forms-ios

the source is on github:
https://github.com/jamesmontemagno/Xamarin.Forms-PullToRefreshListView

here is a video:
Image may be NSFW.
Clik here to view.